Red Oaks vs White Oaks - At Waterfall Glen

We were out for a walk at Waterfall Glen and came across this sign on the trail - a bit "in" from the waterfall parking lot off Bluff Road - that shows the two groups of Oaks:  Red Oaks and White Oaks.

This sign shows that in the Red Oak Group are: Northern Red Oak, Black Oak, Shingle Oak and Hill's Oak.  in the White Oak Group are: White Oak, Bur Oak, Swamp White Oakk and Chinquapin Oak. 

The key difference is that *most* of the Red Oaks have pointed lobes while White Oak lobes are typically rounded. 

We have two large Oaks in our backyard.  But, I haven't, at this point, been able to name them.  With this chart, I'm now thinking that I'll be able to do JUST THAT this Fall when I'm seeing the leaves on the ground.